orc: Add out operator

1 files changed, 15 insertions, 16 deletions

diff --git a/test/ds.c b/test/ds.c
index fb574f0..ef315f7 100644
--- a/test/ds.c
+++ b/test/ds.c
@@ -17,6 +17,7 @@
 #define COMPOSITE_OVER(d,s,m) (ORC_MULDIV_255((d),(255-m)) + (s))
 #define COMPOSITE_ADD(d,s) ORC_CLAMP((d) + (s), 0, 255)
 #define COMPOSITE_IN(s,m) ORC_MULDIV_255((s),(m))
+#define COMPOSITE_OUT(s,m) (ORC_MULDIV_255((s),(255-m)))
 
 #define ORC_DIVIDE_255(x) ((((x)+128) + (((x)+128)>>8))>>8)
 #define ORC_MULDIV_255(a,b) ORC_DIVIDE_255((a)*(b))
@@ -31,8 +32,6 @@
    (ORC_CLAMP((r),0,255)<<16)| \
    (ORC_CLAMP((a),0,255)<<24))
 
-  //((((b)&0xff)<<0)|(((g)&0xff)<<8)|(((r)&0xff)<<16)|(((a)&0xff)<<24))
-
 #define randu8() (random()&0xff)
 
 static uint32_t
@@ -57,7 +56,7 @@ combine_mask (const uint32_t *src, const uint32_t *mask, int i)
 }
 
 void
-combine_over_u (pixman_implementation_t *imp,
+combine_out_u (pixman_implementation_t *imp,
                 pixman_op_t              op,
                 uint32_t *                dest,
                 const uint32_t *          src,
@@ -69,11 +68,9 @@ combine_over_u (pixman_implementation_t *imp,
     for (i = 0; i < width; ++i)
     {
         uint32_t s = combine_mask (src, mask, i);
-        uint32_t d = *(dest + i);
-        uint32_t ia = ALPHA_8 (~s);
-
-        UN8x4_MUL_UN8_ADD_UN8x4 (d, ia, s);
-        *(dest + i) = d;
+        uint32_t a = ALPHA_8 (~*(dest + i));
+        UN8x4_MUL_UN8 (s, a);
+        *(dest + i) = s;
     }
 }
 
@@ -122,19 +119,21 @@ int main (int argc, char *argv[])
     mask[i]=ORC_ARGB(255,0,0,0);
   }
 
-  //combine_over_u (NULL, 0, dest, src, mask, 256);
-  combine_over_u (NULL, 0, dest_ref, src, NULL, 256);
-  //orc_code_combine_over_u_n (dest, src, 256);
+  //combine_out_u (NULL, 0, dest, src, mask, 256);
+  combine_out_u (NULL, 0, dest_ref, src, NULL, 256);
+  orc_code_combine_out_u_n (dest, src, 256);
 
+#if 0
   for(i=0;i<256;i++){
-    int a = ORC_ARGB_A(src[i]);
+    int a = ORC_ARGB_A(dest[i]);
     dest[i] = ORC_ARGB(
-        COMPOSITE_OVER(ORC_ARGB_A(dest[i]), ORC_ARGB_A(src[i]), a),
-        COMPOSITE_OVER(ORC_ARGB_R(dest[i]), ORC_ARGB_R(src[i]), a),
-        COMPOSITE_OVER(ORC_ARGB_G(dest[i]), ORC_ARGB_G(src[i]), a),
-        COMPOSITE_OVER(ORC_ARGB_B(dest[i]), ORC_ARGB_B(src[i]), a));
+        COMPOSITE_OUT(ORC_ARGB_A(src[i]), a),
+        COMPOSITE_OUT(ORC_ARGB_R(src[i]), a),
+        COMPOSITE_OUT(ORC_ARGB_G(src[i]), a),
+        COMPOSITE_OUT(ORC_ARGB_B(src[i]), a));
 
   }
+#endif
 
   for(i=0;i<256;i++){
     printf("%02x %02x %02x %02x  %02x %02x %02x %02x -> "